As for breaking up Larsson and Gelinas, I'm in favor - it's time to take the kid gloves off on Larsson, he's playing too well to be relegated to that role.
Why do you see that as taking off the kid gloves? If anything, pairing Larsson with a rookie would be an indication that De Boer trusts Larsson more to carry his own weight.
If it's at the cost of a few extra shifts, I don't mind. As Gelinas gets better, the two should get more icetime. And by next year, there's going to be no choice but to give Larsson 20+ minutes per game.